Half to william h



No. 6I8,609. Patented J-an. 3|, I899. T. J. McHUGH. WATER CLOSET FLUSHING VALVE.

2 Sheefs-Sheef l.

(Application filed Nov. 2, 1897.)

(No Model.)

\XATNIEISSEISI Patented Jan. 3|, I899. T. J. MGHUGH.

WATER CLOSET FLUSHING VALVE.

A lication flied Nov. 2, 1897.)

'2 Sheets-Sheet 2.

(No Model.)

WT JETESEIEI Nrrn STATES FFIcE.

I ATENT TIMOTHY J. MCHUGH, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE- HALF TO XVILLIAM H. GALLISON, OF SAME PLACE.

WATER-CLOSET FLUSHING-VALVE.

SPECIFICATION forming part of Letters Patent No. 618,609, dated January 31, 1899.

Application filed November 2, 1897. Serial No. 657,184. (No model.)

To all whom it may concern:

Be it known that I, TIMOTHY J. MoHUeH, of Boston, in the county of Suffolk and State of Massachusettahave invented certain new and useful Improvements in ater-Closet Flushing-Valves, of which the following is a specification.

This invention relates to flushing-valves for water-closet tanks of that class in which the valve is automatically held open for some time after having been raised from its seat, so as to thoroughly flush the bowl.

The invention has for its object to provide a simple, effective, and inexpensive mechanism of this character; and to this end it consists of the improved construction and arrangement of parts which I shall now proceed to describe and claim.

Of the accompanying drawings, forming part of this specification, Figure 1 represents a vertical section through a tank provided with my improved flushing-valve, showing the position of the parts when the valve is closed. Fig. 2 is a similar view with the valve in section, showing the valve in its raised position. Fig. 3 is a similar view showing the position of the valve after the flushing operation and before the water has again filled the tank. Fig. 4: represents a horizontal section on the line& at of Fig. 2. Fig. 5 represents a detail perspective View of the hub of the pivoted float-arm. Fig. 6 represents a detail plan view of the cap for the overflow-pipe. Fig. 7 represents a View similar to Fig. 5 with a member omitted.

The same reference characters indicate the same parts in all the figures.

In that embodiment of my invention illustrated in the drawings the annular valve-seat a is formed on a hollow casting a, which contains a horizontal passage a communicating with the overflow stand-pipe b. The cage is composed of a screw-threaded ring 0, surrounding the valve-seat, and two uprights or guides 0' 0 which support at their upper ends a cylinder d. The latter contains a retarding-piston cl, formed on the valve-stem 6, said piston being formed with ports 61 d below which is arranged a flexible annular flap or valve d Then the valve-stern is raised, water passes through the ports d and allows the piston to ascend freely 5 but when it descends the ports are closed by the flap d and as the bottom of the cylinder is closed the only escape for the water which is below the piston is around the edges of the latter. The cylinder and piston therefore constitute a dash-pot for retarding the descent of the valve-stem, the rate of descent of the latter being governed by the amount of space between the cylinder and piston. A loose-fitting cover d? is provided for the top of the cylinder.

The valve member e is composed of a baseplate e secured to the valve-stem e, a short tube 6 screwing into said plate, a flexible packing-ring 6 held between said plate and a shoulder on the periphery of the tube, and a loose-fitting collar e surrounding the lower portion of the tube and having apertures 6 which may be made to register with similar apertures e in said tube by turning the ring.

f designates an air-tight hollow float secured at one end of an arm f, which is pivoted to the upright c at one side of the cage. The hub f of said arm is provided with two stops or abutments adapted to arrest the descent of the valve at different points by means of their engagement with a projection e formed on the valve-base.

By reason of the buoyancy of the float f the water in the tank g normally maintains the arm f in an elevated position, as shown in Figs. 1 and 2, and when in this position the upper stop or abutment f projects slightly into the path of the projection 6 The stop f consists of a weighted detent loosely pivoted on a stud f which is screwed to the hub f and normally resting on a shelf formed on said hub.

When the valve 6 is raised to flush the bowl, the detent f is raised by the projection e and falls back into place in the path of said projection. The valve is thus prevented from descending and is held in its topmost position. As the water in the tank becomes exhausted to the level indicated by the broken line in Fig. 3 the descent of the float f causes the arm f to swing on its pivot, and thereby moves the detent f 3 out of the path of the proj ection a The valve then descends until the projection strikes against the lower stop or abutment, which consists of a lip f formed on the hub f The dash-pot above mentioned is designed merely to ease the descent of the valve 6 and prevent a sharp impact against the lower stop and against the valveseat. The said stop restrains further downward movement of said valve until the water in the tank flowing in through a ball-cock h has risen a certain distance. In this latter position, although the valve is not yet seated, the flushing operation is stopped by reason of the tube 6 having entered the dischargechannel surrounded by the valve-seat and shut off the main flow of water therethrough. A small amout, however, sufficient to fill the siphon below the closet-bowl continues to flow into the discharge-channel through the apertures e e until the stop f releases the projection e and allows the valve to close against its seat. The amount of water thus flowing in may be regulated by turning the loose collar e and making said apertures register to a greater or less degree with each other.

The overflow-pipe]; is provided with a cap Z), which is attached to a lever b pivoted at b to an arm formed on a split collar b which latter embraces the upper end of the pipe. The weight of the cap tends to close it upon the orifice of the pipe; but it is normally held open by means of the engagement of the lever b when the valve is in its lowermost position, by a flange k, secured to the hooked rod 7:, which connects the valve-stem c with an operating-lever z'. Vhen the valve 6 is raised, the cap I) closes over the pipe and prevents the passage of air therethrough.

Having thus explained the nature of the invention and described a way of constructing and using the same, though without attempting to set forth all of the forms in which it may be made or all of the modes of its use, I declare that what I claim is-- 1. The combination with a tank, of a valve, operating means for opening said valve, and a float operated by the rise and fall of water in the tank and adapted to maintain said valve in successive open positions.

2. The combination with a tank, of a valve having a stop member, operating means for raising said valve from its seat,a float adapted to rise and fall with the water in the tank, and stop members operated by said float and adapted to occupy successive positions in and out of the path of said valve stop member, whereby the valve is temporarily maintained in successive raised positions after the aforesaid operating means have been released.

3. The combination with a tank, of a filling device, a valve having a stop member, a float independent of the filling device and 0perated by the rise and fall of water in the tank, and a pivoted arm carrying said float and carrying a stop member adapted to occupy positions in and out of the path of the valve stop member, one of said stop members being movable independently of its supporting part and adapted to yield without displacing said part when the valve is opened.

4:. The combination with a tank, of a valve, a float operated by the rise and fall of water in the tank, and means connected with said float for temporarily maintaining said valve in an open position when the water is at a relatively low level, and for releasing said valve to allow it to close against its seat as the water rises to a relatively high level.

5. The combination, with a tank, of a vertically-movable valve, a float operated by the rise and fall of water in the tank, a pivoted arm aifixed to said float, a detent pivoted to said arm and adapted to act as a stop to maintain the valve temporarily in a raised position, and a stop on said arm below said detent, the said lower stop being adapted to maintain the valve temporarily in a second raised position after the water has fallen to a relatively low level and to release said valve to allow it to close against its seat as the water again rises in the tank.

6. The combination with a tank, of a vertically-movable valve, a float operated by the rise and fall of water in the tank, stops connected with said float and adapted to check the valve at successive points in its descent, and a dash-pot for retarding the fall of the valve when released by said stops.

7. A flushing device comprising an annular valve-seat surrounding an outlet, a valve, and a tubular extension on said valve adapted to enter the valve-seat and shut off the main flow of water through the outlet, the said extension having one or more adjustable apertures for admitting a relatively small quantity to the outlet.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 28th day of September, A. D. 1897.

TIMOTHY J. MCIIUGH.

lVitnesses:

R. M. PIERSON, O. C. STECHER. 

